[특허]Method and apparatus for continuous polycondensation

[미국특허] Method and apparatus for continuous polycondensation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08F-002/00 C08G-085/00
출원번호	US-0242903 (1999-02-25)
우선권정보	JP-0128267 (1997-05-19)
국제출원번호	PCT/JP97/03083 (1997-09-03)
§371/§102 date	19990225 (19990225)
국제공개번호	WO-9810007 (1998-03-12)
발명자 / 주소	Nakamoto Hidekazu,JPX Harada Susumu,JPX Oda Chikao,JPX Sase Yasunari,JPX Suzuki Michio,JPX
출원인 / 주소	Hitachi, Ltd., JPX
대리인 / 주소	Antonelli, Terry, Stout & Kraus, LLP
인용정보	피인용 횟수 : 36 인용 특허 : 1

초록 ▼

An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a miminum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

대표청구항 ▼

[ What is claimed is:] [1.] A process for continuously producing polyester by means of a first reactor for reacting an aromatic dicarboxylic acid or its derivative with a glycol, thereby producing an oligoester or a polyester having an average degree of polymerization of 3 to 7, a second reactor for polycondensing the product, thereby producing a low molecular weight polymer having an average degree of polymerization of 20 to 40 and a third reactor for further polycondensing the low molecular weight polymer to an average degree of polymerization of 90 to 180, thereby producing a high molecular weight polyester, wherein a reactor for continuously producing polyester, which comprises a substantially vertical cylindrical vessel provided with an inlet and an outlet for a liquid feed, respectively, at the lower side part thereof and at the bottom at the center thereof in the longitudinal direction thereof, an outlet for volatile matters at the top thereof, a heating medium jacket around the outer periphery of the vessel body, a heat exchange section at the lower part thereof within the vessel, a residence section with helical baffer plates at the intermediate position thereof within the vessel for retaining and successively transforming the liquid feed from the above downwards, a space for gas-liquid separation at the upper position thereof within the vessel, and a down pipe at the center in the vertical direction of the vessel for flowing down the liquid feed as a thin film therethrough, is used as the second reactor.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Bhatia Kamlesh K. (Newark DE), Continuous polyester process.
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이 특허를 인용한 특허 (36) 인용/피인용 타임라인 분석

DeBruin, Bruce Roger, Adsorber system to replace water column in a polyester process.
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DeBruin, Bruce Roger, Component introduction into manufacturing process through recirculation.
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Agarwal, Uday Shankar; Mishra, Ved Prakash; Rao, Krishna Srinivas; Venkatachalam, Subbiah; Dixit, Rajiv; Jain, Ashwin Kumar; Kelkar, Anil Krishna, Continuous polymerization process using intensely stirred vessels.
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Yount, Thomas Lloyd; DeBruin, Bruce Roger; Windes, Larry Cates; Flores, Roy Douglas; White, Alan Wayne; Bellner, Steven Paul, Horizontal trayed reactor.
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Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with dual headers.
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DeBruin, Bruce Roger; Ekart, Michael Paul; Yount, Thomas Lloyd; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with internal tray.
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Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with oppositely extending segments.
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Yount, Thomas Lloyd; DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates; Sliger, David Allen, Multi-level tubular reactor with vertically spaced segments.
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DeBruin, Bruce Roger, Polyester process using a pipe reactor.
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DeBruin, Bruce Roger, Polyester process using a pipe reactor.
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DeBruin, Bruce Roger, Polyester process using a pipe reactor.
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DeBruin, Bruce Roger, Polyester process using a pipe reactor.
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DeBruin, Roger Bruce, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger; Bonner,Richard Gill, Polyester process using a pipe reactor.
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DeBruin,Bruce Roger; Martin,Daniel Lee, Polyester process using a pipe reactor.
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Debruin, Bruce Roger, Polyester process using a pipe reactor.
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DeBruin, Bruce Roger, Polyester production system employing horizontally elongated esterification vessel.
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DeBruin, Bruce Roger, Polyester production system employing hot paste to esterification zone.
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DeBruin, Bruce Roger, Polyester production system employing recirculation of hot alcohol to esterification zone.
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Nakamoto,Hidekazu; Harada,Susumu; Oda,Chikao; Sase,Yasunari; Suzuki,Michio, Process and apparatus for continuous polycondensation.
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Schulz Van Endert, Eike, Process for continuous preparation of high molecular weight polyesters by esterification of dicarboxylic acids and/or transesterification of dicarboxylic acids with diols and/or mixtures thereof and an apparatus therefor.
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Van Endert, Eike Schulz, Process for continuous preparation of high molecular weight polyesters by esterification of dicarboxylic acids and/or transesterification of dicarboxylic acids with diols and/or mixtures thereof and an apparatus therefor.
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Nakamoto,Hidekazu; Harada,Susumu; Maeda,Norifumi; Yamaguchi,Shuji, Process for continuously producing polybutylene terephthalate.
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White,Alan Wayne; Ekart,Michael Paul; Windes,Larry Cates; Bonner,Richard Gill; Wonders,Alan George, Process for production of a polyester product from alkylene oxide and carboxylic acid.
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Hucks,Uwe; K철nig,Thomas; M철thrath,Melanie, Process for stripping monomers and other volatile constituents from polymer melts.
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Nakamoto,Hidekazu; Harada,Susumu; Maeda,Norifumi; Yamaguchi,Shuji, Production apparatus for polybutylene terephthalate.
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Streng, Michael; Schaeferskurpper, Clifford; Hilpert, Andreas, Reactor for the continuous and simultaneous production of different polyester products having adjustable variable viscosity, the progress of the process being regulated via the hydraulic drive system.
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DeBruin, Bruce Roger; Yount, Thomas Lloyd; Windes, Larry Cates; Moyer, Wesley Thomas, Reactor system with optimized heating and phase separation.
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DeBruin, Bruce Roger; Ekart, Michael Paul; Windes, Larry Cates, Sloped tubular reactor with divided flow.
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Windes, Larry Cates; DeBruin, Bruce Roger; Ekart, Michael Paul, Sloped tubular reactor with spaced sequential trays.
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Marx,Ryan E.; Nelson,James M.; Hanley,Kenneth J., Stirred tube reactor and method of using the same.
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DeBruin, Bruce Roger; Bonner, Richard Gill, System for producing low impurity polyester.
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[미국특허] Method and apparatus for continuous polycondensation 원문보기